It is now possible for a single configuration file to set different options for different networks. This is done by using sections or by prefixing the option with the network, such as:
main.uacomment=digibyte
test.uacomment=digibyte-testnet
regtest.uacomment=regtest
[main]
mempoolsize=300
[test]
mempoolsize=100
[regtest]
mempoolsize=20
The addnode=, connect=, port=, bind=, rpcport=, rpcbind=
and wallet= options will only apply to mainnet when specified in the
configuration file, unless a network is specified.